• Apache Hive - Hive joins, execution engines (tez and mr) and explain/execution plan

    Connect with me or follow me at https://www.linkedin.com/in/durga0gadiraju https://www.facebook.com/itversity https://github.com/dgadiraju https://www.youtube.com/itversityin https://twitter.com/itversity

    published: 06 Apr 2016
  • Video Module 6 Business Process Execution Engines

    Module uit de course BPM technology, over business process execution engines (of workflow engines)

    published: 22 Sep 2016
  • Ligthweigth BPMN Execution Engine

    Case Study for Ligthweigth BPMN Execution Engine Master Thesis

    published: 19 May 2016
  • The Execution Engine of Hadoop

    We talk about TEZ and the other execution engines that are present in Hadoop. Check out the video and do subscribe.

    published: 24 Sep 2017
  • Hero Russian police officer executed by ISIS militants - but is defiant to the end

    The Ministry of Internal Affairs in the Russian Republic of Dagestan has announced that junior lieutenant of police Magomed Nurbagandov will be awarded posthumously for courage in the face of death. The policeman was killed on July 10, 2016 during a militants' attack on local residents resting on a picnic in the forest nearby Sergokala settlement. The gunmen shot to death Magomed and his cousin Abdurashid Nurbagandov having discovered their police identification cards. The militants' actions are perceived to be a deliberate revenge on law enforcement. The video of murder was uploaded on social media soon afterwards, but the militants had cut the episode showing the officer's courageous behavior from the footage. ​On August 7 the National Antiterrorism Committee (NAC) reported that six mil...

    published: 19 Sep 2016
  • Open Source workflows with BPMN 2.0, Java and camunda BPM

    The Business Process Model and Notation (BPMN) is a wordwide ISO standard not only to draw but also to execute business processes. As Java developer you should not be afraid of BPMN thanks to a new generation of embeddable workflow/process engines. This session gives a hands-on introduction into the Open Source camunda BPM platform - expect more live coding than slides. Furthermore I want to share insights of our real-life project experience, for example Zalando processing huge amounts of orders over the platform. Afterwards you are able to decide if and how you may apply camunda in your own (workflow) project. Author: Falko Menge Falko is a senior technical consultant at camunda. He has a lot of experience with process automation and application integration and is a co-founder and commi...

    published: 04 Jan 2016
  • Operating in a Multi-execution Engine Hadoop Environment by Erik Halseth of Datameer

    Businesses want to execute an analytical job at scale in Hadoop, but different parts of that job are potential candidates for specific execution engines so that the job performs under optimal conditions. In addition, past engines such as classic Map Reduce are potentially giving way to new ones such as Spark. This talk will demonstrate how you can leverage the Datameer application to hide the complexity of choosing the right execution engine for an analytical job at scale in Hadoop, and how Spark fits into this context.

    published: 02 Feb 2015
  • Inside Javascript Execution - Fluent 2014

    Have you ever wondered how JavaScript runtime engines actually execute your code? JavaScript as a language has many interesting facets and features, and this has led to innovative techniques for executing code efficiently. Learn all about how modern runtime engines work, and hopefully gain some insight on how you can better leverage the language for your projects.

    published: 05 Apr 2014
  • How to create execution type rules using Code Effects business rules engine

    This tutorial demonstrates how to create execution type business rules using Code Effects business rules engine on ASP.NET MVC web platform Part 1: http://youtu.be/2V0_XLFR3I4 Links to detailed Code Effects documentation: Code Effects rules engine overview: http://rule.codeeffects.com/Doc Evaluation type business rules: http://rule.codeeffects.com/Doc/Business-Rule-Evaluation-Type Execution type business rules: http://rule.codeeffects.com/Doc/Business-Rule-Execution-Type Download Code Effects demo projects: http://rule.codeeffects.com/Doc/Business-Rule-Demo-Project

    published: 18 Mar 2014
  • JavaScript Engines: Under the Hood

    A browser's JavaScript engine can seem like a magical black box. During this session, we'll show you how they work from 10,000 feet and give you the tricks to compile all the popular engines out there including JavaScriptCore, V8, and SpiderMonkey). We'll inspect the internals of the engine, and debug+profile your favorite code snippets. Armed with just a little extra knowledge about this black box, you will be ready to take a new look at JavaScript apps.

    published: 16 Dec 2011
  • Open Source Workflows, Business Rules and Case Management live and in action by Bernd Rücker

    " If you developers cannot deliver any faster and cheaper, we will simply buy an expensive zero code BPM Suite that will solve all our problems!" – famous last words of project managers (soon before they will hopefully get fired). However, there is an interesting alternative: With developer-friendly open source BPM platforms such as Camunda you get a workflow engine based on the BPMN 2.0 standard, business rule support based on the brand new DMN standard and case management based on CMMN. All this can be used embedded as a library but also in large scale scenarios, obviously also in SOA or microservice architectures. Leverage graphical but also executable notations for a new level of transparency in your development cycle as well as in operation. This talk will give you a hands-on introduc...

    published: 12 Nov 2015
  • January 27, 2016 Cop Killer Execution

    The execution of Game Warden Justin Hursch

    published: 29 Jan 2016
  • Monica Beckwith - The Performance Engineer's Guide to HotSpot Virtual Machine's Execution Engine

    Monica Beckwith has worked with the Java Virtual Machine for more than a decade not just optimizing the JVM heuristics, but also improving the Just-in-time (JIT) code quality for various processor architectures as well as working with the garbage collectors and improving garbage collection for server systems. During this talk, Monica will cover a few JIT and Runtime optimizations and she will dive into the HotSpot garbage collection and provide an overview of the various garbage collectors available in HotSpot.

    published: 21 Jun 2017
  • Forked Execution using Viz Trio 2.10

    With Viz Trio's implementation of the new profile configuration, Viz Trio now supports forked execution by having more than one graphics render engine per channel. Simply put you can trigger the same scene on multiple render engines where one can act as your backup.

    published: 15 Feb 2016
  • 1. Set environment variables - Spark as execution engine for Hive

    Full article http://hadooptutorials.info/2017/10/09/part-5-using-spark-as-execution-engine-for-hive/ Full Playlist https://www.youtube.com/playlist?list=PL3GJWzvY8ndEBX8ecpPlpo3MAlrKPh3lD

    published: 14 Oct 2017
  • Database Engine and Join Algorithms

    Animated demonstration of how the database engine and join algorithms: nested loop, merge scan, hash joins work. For free SQL Server query health check, go to: www.sqlprofiler.com

    published: 12 Nov 2013
  • Differences between Hive, Tez, Impala and Spark Sql

    This hangout is to cover difference between different execution engines available in Hadoop and Spark clusters

    published: 20 Jul 2016
  • Boeing 737: Engine Failure

    http://www.balticaa.com Baltic Aviation Academy (Lithuania) makes a comparison of an Airbus A320 with a Boeing 737 at different situations. This time Pranas Drulis, a student of the ATPL integrated course, demonstrates how to execute the flight in Boeing 737 whilst having an engine failed at V1, the take off decision speed.

    published: 04 May 2012
  • PRIDE - AN ENDANGERED SPECIES

    This is a video rant against the people in the PowerStroke repair business that insist on doing poor work. The PowerStroke owner is left hold the bill for their poor or lack of execution.

    published: 18 Dec 2012
  • The Execution Of Julius and Ethel Rosenberg

    Julius and Ethel Rosenberg were United States citizens who were executed on June 19, 1953 after being convicted of committing espionage for the Soviet Union. They were accused of transmitting nuclear weapon designs to the Soviet Union; at that time the United States was the only country with nuclear weapons. They also provided top-secret information about radar, sonar, and jet propulsion engines to the USSR.[1][2][3]

    published: 11 Aug 2017
  • Philip Roberts: What the heck is the event loop anyway? | JSConf EU 2014

    JavaScript programmers like to use words like, “event-loop”, “non-blocking”, “callback”, “asynchronous”, “single-threaded” and “concurrency”. We say things like “don’t block the event loop”, “make sure your code runs at 60 frames-per-second”, “well of course, it won’t work, that function is an asynchronous callback!” If you’re anything like me, you nod and agree, as if it’s all obvious, even though you don’t actually know what the words mean; and yet, finding good explanations of how JavaScript actually works isn’t all that easy, so let’s learn! With some handy visualisations, and fun hacks, let’s get an intuitive understanding of what happens when JavaScript runs. Transcript: http://2014.jsconf.eu/speakers/philip-roberts-what-the-heck-is-the-event-loop-anyway.html License: For reuse ...

    published: 09 Oct 2014
  • Avant Browser IE Engine Remote Code Execution

    Avant Browser is an ultra-fast web browser. Its user-friendly interface brings a new level of clarity and efficiency to your browsing experience, and frequent upgrades have steadily improved its reliability.

    published: 21 Oct 2015
  • Drools 6.2 (Beta1) Execution Server Demo

    A quick demo of the new Drools Execution Server.

    published: 15 Aug 2014
  • How Web Browsers Function

    This video explains the process behind a web browser. What happens when you enter a URL and press enter, and how does the browser know how to present the page to you? This is all explained, as well as all the components that make up a web browser. We use web browsers every day to display web pages, but have you ever wondered what is happening behind the scenes? This is the basic flow of viewing a web page: you send a request over the network to a server, it responds with a collection of web content as a response. Your browser interprets the content returned and displays the page. Let’s look at a high level structure of a browser and the components it uses to accomplish this: The user interface is what’s presented to the user to interact with. It displays to you the address bar, back and ...

    published: 06 Nov 2016
  • Execution Engine

    published: 22 Mar 2017
  • Meerut IT raids Executive Engineer's home

    published: 19 Dec 2016
  • leena - symbolic execution engine for JavaScript

    published: 21 Mar 2016
  • Work Minister Bishwajit suspended Contractor with Executive Engineer

    published: 13 May 2017
  • TX DWA 17.5.4.64 - Execution Engine v3

    published: 10 Jun 2017
developed with YouTube
Apache Hive - Hive joins, execution engines (tez and mr) and explain/execution plan

Apache Hive - Hive joins, execution engines (tez and mr) and explain/execution plan

  • Order:
  • Duration: 13:52
  • Updated: 06 Apr 2016
  • views: 5091
videos
Connect with me or follow me at https://www.linkedin.com/in/durga0gadiraju https://www.facebook.com/itversity https://github.com/dgadiraju https://www.youtube.com/itversityin https://twitter.com/itversity
https://wn.com/Apache_Hive_Hive_Joins,_Execution_Engines_(Tez_And_Mr)_And_Explain_Execution_Plan
Video Module 6   Business Process Execution Engines

Video Module 6 Business Process Execution Engines

  • Order:
  • Duration: 12:47
  • Updated: 22 Sep 2016
  • views: 230
videos
Module uit de course BPM technology, over business process execution engines (of workflow engines)
https://wn.com/Video_Module_6_Business_Process_Execution_Engines
Ligthweigth BPMN Execution Engine

Ligthweigth BPMN Execution Engine

  • Order:
  • Duration: 8:13
  • Updated: 19 May 2016
  • views: 377
videos https://wn.com/Ligthweigth_Bpmn_Execution_Engine
The Execution Engine  of  Hadoop

The Execution Engine of Hadoop

  • Order:
  • Duration: 4:53
  • Updated: 24 Sep 2017
  • views: 15
videos
We talk about TEZ and the other execution engines that are present in Hadoop. Check out the video and do subscribe.
https://wn.com/The_Execution_Engine_Of_Hadoop
Hero Russian police officer executed by ISIS militants - but is defiant to the end

Hero Russian police officer executed by ISIS militants - but is defiant to the end

  • Order:
  • Duration: 1:29
  • Updated: 19 Sep 2016
  • views: 489625
videos
The Ministry of Internal Affairs in the Russian Republic of Dagestan has announced that junior lieutenant of police Magomed Nurbagandov will be awarded posthumously for courage in the face of death. The policeman was killed on July 10, 2016 during a militants' attack on local residents resting on a picnic in the forest nearby Sergokala settlement. The gunmen shot to death Magomed and his cousin Abdurashid Nurbagandov having discovered their police identification cards. The militants' actions are perceived to be a deliberate revenge on law enforcement. The video of murder was uploaded on social media soon afterwards, but the militants had cut the episode showing the officer's courageous behavior from the footage. ​On August 7 the National Antiterrorism Committee (NAC) reported that six militants including the head of a local armed gang had been killed in Dagestan during two separate Special Forces raids. Three militants were neutralized in Izberbash and three more in Makhachkala. According to the NAC, the killed fighters were involved in terrorism-related crimes, including an August attack on road police and the July 10 shooting in which Nurbagandov was killed. The full version of the video was discovered in the cell phone that belonged to one of the militants. In the video one of the militants reads from Magomed Nurbagandov's police id card and asks if the card is his. Magomed, while being held at gunpoint, admits that the card belongs to him. The militant then demands that Magomed looks in the camera and tells his fellow police officers to abandon their duty. "Carry out your duty, brothers," Nurbagandov says looking straight in the camera, "What else you expect me to say?" He then asks the gunman. The officer was reportedly shot in his head a minute afterwards. Dagestan MIA said in a statement that Nurbagandov died a heroic death and that he will be recommended for a posthumous decoration. Keep us alive: http://russia-insider.com/support Visit us! http://russia-insider.com/en Like us on Facebook: https://www.facebook.com/RussiaInsider?ref=aymt_homepage_panel Follow us on Twitter: https://twitter.com/RussiaInsider
https://wn.com/Hero_Russian_Police_Officer_Executed_By_Isis_Militants_But_Is_Defiant_To_The_End
Open Source workflows with BPMN 2.0, Java and camunda BPM

Open Source workflows with BPMN 2.0, Java and camunda BPM

  • Order:
  • Duration: 15:33
  • Updated: 04 Jan 2016
  • views: 13154
videos
The Business Process Model and Notation (BPMN) is a wordwide ISO standard not only to draw but also to execute business processes. As Java developer you should not be afraid of BPMN thanks to a new generation of embeddable workflow/process engines. This session gives a hands-on introduction into the Open Source camunda BPM platform - expect more live coding than slides. Furthermore I want to share insights of our real-life project experience, for example Zalando processing huge amounts of orders over the platform. Afterwards you are able to decide if and how you may apply camunda in your own (workflow) project. Author: Falko Menge Falko is a senior technical consultant at camunda. He has a lot of experience with process automation and application integration and is a co-founder and committer of several Open Source projects in this area including camunda BPM. As the official representative of camunda at the OMG, Falko is a co-author of the BPMN and CMMN standards as well as the OCEB 2 certification. Blog: http://www.bpm-guide.de/
https://wn.com/Open_Source_Workflows_With_Bpmn_2.0,_Java_And_Camunda_Bpm
Operating in a Multi-execution Engine Hadoop Environment by Erik Halseth of Datameer

Operating in a Multi-execution Engine Hadoop Environment by Erik Halseth of Datameer

  • Order:
  • Duration: 57:58
  • Updated: 02 Feb 2015
  • views: 71
videos
Businesses want to execute an analytical job at scale in Hadoop, but different parts of that job are potential candidates for specific execution engines so that the job performs under optimal conditions. In addition, past engines such as classic Map Reduce are potentially giving way to new ones such as Spark. This talk will demonstrate how you can leverage the Datameer application to hide the complexity of choosing the right execution engine for an analytical job at scale in Hadoop, and how Spark fits into this context.
https://wn.com/Operating_In_A_Multi_Execution_Engine_Hadoop_Environment_By_Erik_Halseth_Of_Datameer
Inside Javascript Execution - Fluent 2014

Inside Javascript Execution - Fluent 2014

  • Order:
  • Duration: 30:35
  • Updated: 05 Apr 2014
  • views: 6458
videos
Have you ever wondered how JavaScript runtime engines actually execute your code? JavaScript as a language has many interesting facets and features, and this has led to innovative techniques for executing code efficiently. Learn all about how modern runtime engines work, and hopefully gain some insight on how you can better leverage the language for your projects.
https://wn.com/Inside_Javascript_Execution_Fluent_2014
How to create execution type rules using Code Effects business rules engine

How to create execution type rules using Code Effects business rules engine

  • Order:
  • Duration: 5:46
  • Updated: 18 Mar 2014
  • views: 3055
videos
This tutorial demonstrates how to create execution type business rules using Code Effects business rules engine on ASP.NET MVC web platform Part 1: http://youtu.be/2V0_XLFR3I4 Links to detailed Code Effects documentation: Code Effects rules engine overview: http://rule.codeeffects.com/Doc Evaluation type business rules: http://rule.codeeffects.com/Doc/Business-Rule-Evaluation-Type Execution type business rules: http://rule.codeeffects.com/Doc/Business-Rule-Execution-Type Download Code Effects demo projects: http://rule.codeeffects.com/Doc/Business-Rule-Demo-Project
https://wn.com/How_To_Create_Execution_Type_Rules_Using_Code_Effects_Business_Rules_Engine
JavaScript Engines: Under the Hood

JavaScript Engines: Under the Hood

  • Order:
  • Duration: 46:16
  • Updated: 16 Dec 2011
  • views: 11438
videos
A browser's JavaScript engine can seem like a magical black box. During this session, we'll show you how they work from 10,000 feet and give you the tricks to compile all the popular engines out there including JavaScriptCore, V8, and SpiderMonkey). We'll inspect the internals of the engine, and debug+profile your favorite code snippets. Armed with just a little extra knowledge about this black box, you will be ready to take a new look at JavaScript apps.
https://wn.com/Javascript_Engines_Under_The_Hood
Open Source Workflows, Business Rules and Case Management live and in action by Bernd Rücker

Open Source Workflows, Business Rules and Case Management live and in action by Bernd Rücker

  • Order:
  • Duration: 53:58
  • Updated: 12 Nov 2015
  • views: 6567
videos
" If you developers cannot deliver any faster and cheaper, we will simply buy an expensive zero code BPM Suite that will solve all our problems!" – famous last words of project managers (soon before they will hopefully get fired). However, there is an interesting alternative: With developer-friendly open source BPM platforms such as Camunda you get a workflow engine based on the BPMN 2.0 standard, business rule support based on the brand new DMN standard and case management based on CMMN. All this can be used embedded as a library but also in large scale scenarios, obviously also in SOA or microservice architectures. Leverage graphical but also executable notations for a new level of transparency in your development cycle as well as in operation. This talk will give you a hands-on introduction based on a real-life example as well as experiences from various projects. Live coding included – guaranteed developer-friendly!
https://wn.com/Open_Source_Workflows,_Business_Rules_And_Case_Management_Live_And_In_Action_By_Bernd_Rücker
January 27, 2016 Cop Killer Execution

January 27, 2016 Cop Killer Execution

  • Order:
  • Duration: 0:34
  • Updated: 29 Jan 2016
  • views: 255
videos
The execution of Game Warden Justin Hursch
https://wn.com/January_27,_2016_Cop_Killer_Execution
Monica Beckwith - The Performance Engineer's Guide to HotSpot Virtual Machine's Execution Engine

Monica Beckwith - The Performance Engineer's Guide to HotSpot Virtual Machine's Execution Engine

  • Order:
  • Duration: 55:05
  • Updated: 21 Jun 2017
  • views: 204
videos
Monica Beckwith has worked with the Java Virtual Machine for more than a decade not just optimizing the JVM heuristics, but also improving the Just-in-time (JIT) code quality for various processor architectures as well as working with the garbage collectors and improving garbage collection for server systems. During this talk, Monica will cover a few JIT and Runtime optimizations and she will dive into the HotSpot garbage collection and provide an overview of the various garbage collectors available in HotSpot.
https://wn.com/Monica_Beckwith_The_Performance_Engineer's_Guide_To_Hotspot_Virtual_Machine's_Execution_Engine
Forked Execution using Viz Trio 2.10

Forked Execution using Viz Trio 2.10

  • Order:
  • Duration: 4:21
  • Updated: 15 Feb 2016
  • views: 388
videos
With Viz Trio's implementation of the new profile configuration, Viz Trio now supports forked execution by having more than one graphics render engine per channel. Simply put you can trigger the same scene on multiple render engines where one can act as your backup.
https://wn.com/Forked_Execution_Using_Viz_Trio_2.10
1. Set environment variables - Spark as execution engine for Hive

1. Set environment variables - Spark as execution engine for Hive

  • Order:
  • Duration: 5:07
  • Updated: 14 Oct 2017
  • views: 17
videos
Full article http://hadooptutorials.info/2017/10/09/part-5-using-spark-as-execution-engine-for-hive/ Full Playlist https://www.youtube.com/playlist?list=PL3GJWzvY8ndEBX8ecpPlpo3MAlrKPh3lD
https://wn.com/1._Set_Environment_Variables_Spark_As_Execution_Engine_For_Hive
Database Engine and Join Algorithms

Database Engine and Join Algorithms

  • Order:
  • Duration: 3:07
  • Updated: 12 Nov 2013
  • views: 16908
videos
Animated demonstration of how the database engine and join algorithms: nested loop, merge scan, hash joins work. For free SQL Server query health check, go to: www.sqlprofiler.com
https://wn.com/Database_Engine_And_Join_Algorithms
Differences between Hive, Tez, Impala and Spark Sql

Differences between Hive, Tez, Impala and Spark Sql

  • Order:
  • Duration: 23:41
  • Updated: 20 Jul 2016
  • views: 5255
videos
This hangout is to cover difference between different execution engines available in Hadoop and Spark clusters
https://wn.com/Differences_Between_Hive,_Tez,_Impala_And_Spark_Sql
Boeing 737: Engine Failure

Boeing 737: Engine Failure

  • Order:
  • Duration: 22:02
  • Updated: 04 May 2012
  • views: 431402
videos
http://www.balticaa.com Baltic Aviation Academy (Lithuania) makes a comparison of an Airbus A320 with a Boeing 737 at different situations. This time Pranas Drulis, a student of the ATPL integrated course, demonstrates how to execute the flight in Boeing 737 whilst having an engine failed at V1, the take off decision speed.
https://wn.com/Boeing_737_Engine_Failure
PRIDE - AN ENDANGERED SPECIES

PRIDE - AN ENDANGERED SPECIES

  • Order:
  • Duration: 9:32
  • Updated: 18 Dec 2012
  • views: 118301
videos
This is a video rant against the people in the PowerStroke repair business that insist on doing poor work. The PowerStroke owner is left hold the bill for their poor or lack of execution.
https://wn.com/Pride_An_Endangered_Species
The Execution Of Julius and Ethel Rosenberg

The Execution Of Julius and Ethel Rosenberg

  • Order:
  • Duration: 0:21
  • Updated: 11 Aug 2017
  • views: 77
videos
Julius and Ethel Rosenberg were United States citizens who were executed on June 19, 1953 after being convicted of committing espionage for the Soviet Union. They were accused of transmitting nuclear weapon designs to the Soviet Union; at that time the United States was the only country with nuclear weapons. They also provided top-secret information about radar, sonar, and jet propulsion engines to the USSR.[1][2][3]
https://wn.com/The_Execution_Of_Julius_And_Ethel_Rosenberg
Philip Roberts: What the heck is the event loop anyway? | JSConf EU 2014

Philip Roberts: What the heck is the event loop anyway? | JSConf EU 2014

  • Order:
  • Duration: 26:53
  • Updated: 09 Oct 2014
  • views: 460993
videos
JavaScript programmers like to use words like, “event-loop”, “non-blocking”, “callback”, “asynchronous”, “single-threaded” and “concurrency”. We say things like “don’t block the event loop”, “make sure your code runs at 60 frames-per-second”, “well of course, it won’t work, that function is an asynchronous callback!” If you’re anything like me, you nod and agree, as if it’s all obvious, even though you don’t actually know what the words mean; and yet, finding good explanations of how JavaScript actually works isn’t all that easy, so let’s learn! With some handy visualisations, and fun hacks, let’s get an intuitive understanding of what happens when JavaScript runs. Transcript: http://2014.jsconf.eu/speakers/philip-roberts-what-the-heck-is-the-event-loop-anyway.html License: For reuse of this video under a more permissive license please get in touch with us. The speakers retain the copyright for their performances.
https://wn.com/Philip_Roberts_What_The_Heck_Is_The_Event_Loop_Anyway_|_Jsconf_Eu_2014
Avant Browser IE Engine Remote Code Execution

Avant Browser IE Engine Remote Code Execution

  • Order:
  • Duration: 0:50
  • Updated: 21 Oct 2015
  • views: 106
videos
Avant Browser is an ultra-fast web browser. Its user-friendly interface brings a new level of clarity and efficiency to your browsing experience, and frequent upgrades have steadily improved its reliability.
https://wn.com/Avant_Browser_Ie_Engine_Remote_Code_Execution
Drools 6.2 (Beta1) Execution Server Demo

Drools 6.2 (Beta1) Execution Server Demo

  • Order:
  • Duration: 15:34
  • Updated: 15 Aug 2014
  • views: 18314
videos
A quick demo of the new Drools Execution Server.
https://wn.com/Drools_6.2_(Beta1)_Execution_Server_Demo
How Web Browsers Function

How Web Browsers Function

  • Order:
  • Duration: 4:52
  • Updated: 06 Nov 2016
  • views: 7925
videos
This video explains the process behind a web browser. What happens when you enter a URL and press enter, and how does the browser know how to present the page to you? This is all explained, as well as all the components that make up a web browser. We use web browsers every day to display web pages, but have you ever wondered what is happening behind the scenes? This is the basic flow of viewing a web page: you send a request over the network to a server, it responds with a collection of web content as a response. Your browser interprets the content returned and displays the page. Let’s look at a high level structure of a browser and the components it uses to accomplish this: The user interface is what’s presented to the user to interact with. It displays to you the address bar, back and forward buttons and any other visual element you can interact with, such as tabs. A browser has a rendering engine that is responsible for displaying the visual representation of the webpage. Think of the rendering engine as a painter working on a blank canvas. It’s his responsibility to construct the page by applying the right structures and colours. The engine takes in HTML and CSS documents, then displays its interpretation of both. HTML exists to markup our content, and CSS is used to style and animate our content. The browser engine acts as a marshal who directs actions between the User Interface and the rendering engine, as well as external communication with servers. To receive content for a web page, the browser has to communicate over the network, asking for all the necessary images and documents that make up the page. You’ve probably encountered a situation where an image is missing on the page, this usually means the network failed to fetch the image from the server. ((demo ajax request in animation)) To apply interactive logic and functionality to our website, we rely on a programming language called JavaScript. The browser has no idea how to deal with JavaScript directly. It’s like a person who only knows Spanish, but is trying to listen to someone speaking Chinese. We need a way to translate the communication, and this is done with an interpreter. Browsers have their own JavaScript interpreters: Chakra is used by Microsoft Edge, SpiderMonkey for Firefox and V8 is used by Google Chrome. You also have something called data storage such as Cookies and Local Storage. This helps us retain state even when you refresh the page. You’ll find cookies are used to remember bits of information such as your name. The rendering engine can render images, videos, SVG files, audio files, but by default; displays HTML and XML documents; types of markup language. These documents as you can see are constructed of tags. Not all browsers use the same rendering engine. This is why you sometimes see inconsistencies with how things look from browser to browser. Chrome and Opera use an engine called Blink, Safari uses WebKit and Firefox uses Gecko. These engines have their own implementations of how to render the page, but all tend to follow the same flow. It’s the responsibility of the network layer to provide the rendering engine the requested document. Firstly, the rendering engine reads the HTML and constructs a DOM content tree, this stands for ‘Document Object Model’; an object representation of the HTML document. The DOM tree is made up of DOM nodes. Nodes can be images, text blocks, buttons or any other element. All the CSS styling associated with these nodes are parsed by the engine. Now with the styling information and visual instructions, a new tree can be created; the render tree. Once this has been constructed, it then goes through a layout process where each node is positioned on the screen with coordinates. The render tree is then traversed, with each node painted using the UI backend layer. The process happens so fast, you can’t see every node get rendered on the page, hence why the whole page’s entire content is visible when the page has finished loading. When the parsing process has finished, the browser will mark the document as interactive, allowing you; the user, to interact with the nodes on the page. References: https://www.youtube.com/watch?v=bx_VmJGdgHc https://www.html5rocks.com/en/tutorials/internals/howbrowserswork/ http://arvindr21.github.io/howBrowserWorks/#/25 https://en.wikipedia.org/wiki/Comparison_of_web_browser_engines http://stackoverflow.com/questions/1307929/javascript-dom-load-events-execution-sequence-and-document-ready Assets Used: http://www.freepik.com/free-vector/white-arrow-icons_821376.htm
https://wn.com/How_Web_Browsers_Function
Execution Engine

Execution Engine

  • Order:
  • Duration: 0:50
  • Updated: 22 Mar 2017
  • views: 84
videos
https://wn.com/Execution_Engine
Meerut  IT raids Executive Engineer's home

Meerut IT raids Executive Engineer's home

  • Order:
  • Duration: 1:46
  • Updated: 19 Dec 2016
  • views: 8
videos
https://wn.com/Meerut_It_Raids_Executive_Engineer's_Home
leena - symbolic execution engine for JavaScript

leena - symbolic execution engine for JavaScript

  • Order:
  • Duration: 1:19
  • Updated: 21 Mar 2016
  • views: 119
videos
https://wn.com/Leena_Symbolic_Execution_Engine_For_Javascript
Work Minister Bishwajit suspended Contractor with Executive Engineer

Work Minister Bishwajit suspended Contractor with Executive Engineer

  • Order:
  • Duration: 1:43
  • Updated: 13 May 2017
  • views: 453
videos
https://wn.com/Work_Minister_Bishwajit_Suspended_Contractor_With_Executive_Engineer
TX DWA 17.5.4.64 - Execution Engine v3

TX DWA 17.5.4.64 - Execution Engine v3

  • Order:
  • Duration: 0:52
  • Updated: 10 Jun 2017
  • views: 5
videos
https://wn.com/Tx_Dwa_17.5.4.64_Execution_Engine_V3
×